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Finding the Fourth Proportional to 655.89, 983.93 and 245.18

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Solution

The fourth proportional to 655.89, 983.93 and 245.18 is: 367.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.89 : 983.93 = 245.18 : x
  2. Step 2: Convert to fraction form
    655.89/983.93 = 245.18/x
  3. Step 3: Cross multiply
    655.89x = 983.93 × 245.18
  4. Step 4: Simplify right side
    655.89x = 241,233.81
  5. Step 5: Solve for x
    x = 241,233.81/655.89
  6. Step 6: Final answer
    x = 367.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.